MESON Chess Problem Database
Problem Display
PID: 141086 (qr6/3P1p2/p4Q2/RrkN4/1R2B3/4p3/1K1N4/n2bB3 w - - 0 1)
den Toom, Bas
Probleemblad, 1976
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Qxb6#
- 1...Rc8
- 2.Qb6#
- 1...Rd8
- 2.Qb6#
- 1...Re8
- 2.Qb6#
- 1...Rf8
- 2.Qb6#
- 1...Rg8
- 2.Qb6#
- 1...Rh8
- 2.Qb6#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Rc4#
- 1...exd2
- 2.Bf2#
- 1...e2
- 2.Bf2#
- 1...Rb6
- Tries
- 1.Sxe3?
- threat
- 2.Qd4#
- 1...Kxb4
- 2.Sb3#
- 2.Qc3#
- 1...Qxe4
- 2.Sxe4#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Rc4#
- 1...Qd5!
- threat
- 1.Sf4?
- threat
- 2.Sd3#
- 2.Qd4#
- 1...Kxb4
- 2.Qc3#
- 1...Qxe4
- 2.Sxe4#
- 1...Qc6
- 2.Qd4#
- 1...Bc2
- 2.Qd4#
- 1...Be2
- 2.Qd4#
- 1...Sc2
- 2.Sb3#
- 2.Sd3#
- 1...Sb3
- 2.Sd3#
- 2.Rc4#
- 1...Qd5!
- threat
- 1.Sb6?
- threat
- 2.Qd4#
- 1...Kxb4
- 2.Sb3#
- 2.Qc3#
- 1...Qxe4
- 2.Sxe4#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Rc4#
- 1...Qd5!
- threat
- 1.Se7?
- threat
- 2.Qd4#
- 1...Kxb4
- 2.Qc3#
- 1...Qxe4
- 2.Sxe4#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Rc4#
- 1...Qd5!
- threat
- 1.Bg3?
- threat
- 2.Qc3#
- 2.Qd6#
- 1...Qc6
- 2.Qc3#
- 2.Qd4#
- 1...Rb6
- 2.Qc3#
- 2.Qxb6#
- 1...Be2
- 2.Qd6#
- 1...Bb3
- 2.Qd6#
- 1...Qxd5!
- threat
- 1.d8Q?
- threat
- 2.Qc3#
- 2.Qde7#
- 2.Qfd6#
- 2.Qdd6#
- 1...Rxd8
- 2.Qb6#
- 1...Qc6
- 2.Qc3#
- 2.Qd4#
- 1...Qb7
- 2.Qc3#
- 2.Qfd6#
- 2.Qdd6#
- 1...Qa7
- 2.Qc3#
- 2.Qfd6#
- 2.Qdd6#
- 1...Rb6
- 2.Qc3#
- 2.Qdxb6#
- 2.Qfxb6#
- 1...Rb7
- 2.Qc3#
- 2.Qfd6#
- 2.Qdd6#
- 1...Be2
- 2.Qde7#
- 2.Qfd6#
- 2.Qdd6#
- 1...Bb3
- 2.Qde7#
- 2.Qfd6#
- 2.Qdd6#
- 1...Qxd5!
- threat
- 1.d8R?
- threat
- 2.Qc3#
- 2.Qd6#
- 1...Rxd8
- 2.Qb6#
- 1...Qc6
- 2.Qc3#
- 2.Qd4#
- 1...Rb6
- 2.Qc3#
- 2.Qxb6#
- 1...Be2
- 2.Qd6#
- 1...Bb3
- 2.Qd6#
- 1...Qxd5!
- threat
- 1.Sxe3?
- Keys
- 1.Sc7!
- threat
- 2.Qd4#
- 1...Kxb4
- 2.Qc3#
- 1...Qxe4
- 2.Sxe4#
- 1...Qd5
- 2.Sxa6#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Rc4#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(i);N_GUARD::QAB1(H),XR(i)
- R(i);N_GUARD::QAB1(H)
- S(a);N_GUARD,S_CUTB(b)::S(C)
- S(a);N_PINR(D)::R1(D)
- P(c);OGATEB,XS(C)::B(A)
- P(c);OGATEB::B(A)
- Tries
- Try
- S(G);XP(c)
- Threat
- QAB1(H)
- Vars
- Q(h);XB(E)::S(C),XQ(h)
- S(a);N_GUARD,S_CUTB(b)::S(C)
- S(a);N_PINR(D)::R1(D)
- Refutation
- Q(h);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINR(d),S_FLIGHT,XR(D)::QAB1(H)
- Q(h);XB(E)::S(C),XQ(h)
- Q(h);::QAB1(H)
- B(b);::QAB1(H)
- Refutation
- Q(h);
- Try
- S(G);
- Threat
- QAB1(H)
- Vars
- Q(h);XB(E)::S(C),XQ(h)
- S(a);N_GUARD,S_CUTB(b)::S(C)
- S(a);N_PINR(D)::R1(D)
- Refutation
- Q(h);
- Try
- S(G);
- Threat
- QAB1(H)
- Vars
- K(e);N_SPINR(d),S_FLIGHT,XR(D)::QAB1(H)
- Q(h);XB(E)::S(C),XQ(h)
- S(a);N_GUARD,S_CUTB(b)::S(C)
- S(a);N_PINR(D)::R1(D)
- Refutation
- Q(h);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- B(b);::QAB1(H)
- B(b);N_PINR(D)::QAB1(H)
- Refutation
- Q(h);XS(G)
- Try
- P(I);
- Threat
- DUALS(4)
- Vars
- R(i);N_GUARD,XQ(I)::QAB1(H)
- Refutation
- Q(h);XS(G)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD,XR(I)::QAB1(H)
- B(b);::QAB1(H)
- B(b);N_PINR(D)::QAB1(H)
- Refutation
- Q(h);XS(G)
- Try
- Actual
- S(G);
- Threat
- QAB1(H)
- Vars
- K(e);N_SPINR(d),S_FLIGHT,XR(D)::QAB1(H)
- Q(h);XB(E)::S(C),XQ(h)
- Q(h);N_GUARD::S(G),XP(f)
- S(a);N_GUARD,S_CUTB(b)::S(C)
- S(a);N_PINR(D)::R1(D)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).